Refactor building the list of partition locations

[nshestakov]

Changelog entry

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Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

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[github-actions]

⚪ 2025-07-04 06:08:45 UTC Pre-commit check linux-x86_64-relwithdebinfo for 471cef2 has started.
⚪ 2025-07-04 06:09:28 UTC Artifacts will be uploaded here
⚪ 2025-07-04 06:13:11 UTC ya make is running...
🟡 2025-07-04 07:19:57 UTC Some tests failed, follow the links below. Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
29663	28249	0	5	1379	30

⚪ 2025-07-04 07:22:36 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-07-04 07:28:23 UTC Tests successful.

Test history | Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
582 (only retried tests)	548	0	0	9	25

🟢 2025-07-04 07:28:32 UTC Build successful.
🟢 2025-07-04 07:28:50 UTC ydbd size 2.2 GiB changed* by +2.6 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: dc91732	merge: 471cef2	diff	diff %
ydbd size	2 387 749 512 Bytes	2 387 752 184 Bytes	+2.6 KiB	+0.000%
ydbd stripped size	499 597 864 Bytes	499 598 632 Bytes	+768 Bytes	+0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

🟢 2025-07-04 06:10:46 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-07-04 06:10:53 UTC Pre-commit check linux-x86_64-release-asan for 471cef2 has started.
⚪ 2025-07-04 06:11:22 UTC Artifacts will be uploaded here
⚪ 2025-07-04 06:15:01 UTC ya make is running...
🟡 2025-07-04 07:53:01 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
14278	13926	0	125	200	27

🟢 2025-07-04 07:54:18 UTC Build successful.
🟢 2025-07-04 07:54:49 UTC ydbd size 3.9 GiB changed* by +3.3 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: dc91732	merge: 471cef2	diff	diff %
ydbd size	4 200 266 376 Bytes	4 200 269 752 Bytes	+3.3 KiB	+0.000%
ydbd stripped size	1 455 388 440 Bytes	1 455 389 592 Bytes	+1.1 KiB	+0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}